Idioms
The language peculiar to a people or to a district, community, or class
Idiom:
in the swim
Meaning:
active in something, knowing what is going on
Example:
My colleague is definitely in the swim. He has information about everybody.
List of common idioms, their meanings and examples of their usage in sentences
Idioms can be a powerful linguistic tool only when they are used in the right way in the right places.